rare earth element

noun 0.915

rare

noun 0.723

rareness

noun 0.656

neodymium

noun 0.633

erbium

noun 0.619

rarity

noun 0.609

lanthanide

noun 0.608

precious metal

noun 0.595

cerium

noun 0.594

rara avis

noun 0.583

dysprosium

noun 0.580

praseodymium

noun 0.579

rhenium

noun 0.572

yttrium

noun 0.570

iridium

noun 0.566

alkaline earth

noun 0.564

europium

noun 0.563

lanthanum

noun 0.562

radium

noun 0.545

terbium

noun 0.538

red earth

noun 0.537

bastnaesite

noun 0.537

rhodium

noun 0.535

noble metal

noun 0.534

lanthanoid

noun 0.534

ore

noun 0.533

ruthenium

noun 0.533

thorium

noun 0.532

alkaline earth metal

noun 0.529

uranium

noun 0.528

precious stone

noun 0.527

rarefaction

noun 0.526

earth

noun 0.525

samarium

noun 0.525

precious

noun 0.523

platinum group

noun 0.522

ytterbium

noun 0.521

microelement

noun 0.520

tellurium

noun 0.517

lutetium

noun 0.514

radioactive

noun 0.513

emerald

noun 0.513

rubidium

noun 0.513

ferrite

noun 0.512

transuranic

noun 0.512

tungsten

noun 0.511

monazite

noun 0.508

einsteinium

noun 0.506

scandium

noun 0.505

transition metal

noun 0.504

beryllium

noun 0.504

unusual

noun 0.503

superheavy

noun 0.503

unlikely

noun 0.503

uncommonness

noun 0.503

nonmetal

noun 0.502

noble gas

noun 0.501

tantalum

noun 0.501

gadolinium

noun 0.501

niobium

noun 0.501

xenotime

noun 0.500

indium

noun 0.500